Conversions between Euclid and Kurbo types

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

Author: sagudev

Cargo.lock

@@ -21,14 +21,16 @@ workspace = true
 
 [features]
 default = ["std"]
-std = []
-libm = ["dep:libm"]
+std = ["euclid/std"]
+libm = ["dep:libm", "euclid/libm"]
 mint = ["dep:mint"]
 serde = ["smallvec/serde", "dep:serde"]
 schemars = ["schemars/smallvec", "dep:schemars"]
+euclid = ["dep:euclid"]
 
 [dependencies]
 smallvec = "1.15.0"
+euclid = { version = "0.22", optional = true, default-features = false }
 
 [dependencies.arrayvec]
 version = "0.7.6"

kurbo/Cargo.toml

@@ -0,0 +1,79 @@
+// Copyright 2025 the Kurbo Authors
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use euclid::UnknownUnit;
+
+impl From<euclid::Vector2D<f64, UnknownUnit>> for crate::Vec2 {
+    fn from(value: euclid::Vector2D<f64, UnknownUnit>) -> Self {
+        Self::new(value.x, value.y)
+    }
+}
+
+impl From<crate::Vec2> for euclid::Vector2D<f64, UnknownUnit> {
+    fn from(value: crate::Vec2) -> Self {
+        Self::new(value.x, value.y)
+    }
+}
+
+impl From<euclid::Point2D<f64, UnknownUnit>> for crate::Point {
+    fn from(value: euclid::Point2D<f64, UnknownUnit>) -> Self {
+        Self::new(value.x, value.y)
+    }
+}
+
+impl From<crate::Point> for euclid::Point2D<f64, UnknownUnit> {
+    fn from(value: crate::Point) -> Self {
+        Self::new(value.x, value.y)
+    }
+}
+
+impl From<euclid::Size2D<f64, UnknownUnit>> for crate::Size {
+    fn from(value: euclid::Size2D<f64, UnknownUnit>) -> Self {
+        Self::new(value.width, value.height)
+    }
+}
+
+impl From<crate::Size> for euclid::Size2D<f64, UnknownUnit> {
+    fn from(value: crate::Size) -> Self {
+        Self::new(value.width, value.height)
+    }
+}
+
+impl From<euclid::Rect<f64, UnknownUnit>> for crate::Rect {
+    fn from(value: euclid::Rect<f64, UnknownUnit>) -> Self {
+        Self::from_origin_size(value.origin, value.size)
+    }
+}
+
+impl From<crate::Rect> for euclid::Rect<f64, UnknownUnit> {
+    fn from(value: crate::Rect) -> Self {
+        Self::new(value.origin().into(), value.size().into())
+    }
+}
+
+impl From<euclid::Box2D<f64, UnknownUnit>> for crate::Rect {
+    fn from(value: euclid::Box2D<f64, UnknownUnit>) -> Self {
+        Self::from_points(value.min, value.max)
+    }
+}
+
+impl From<crate::Rect> for euclid::Box2D<f64, UnknownUnit> {
+    fn from(value: crate::Rect) -> Self {
+        Self::new(
+            euclid::Point2D::new(value.min_x(), value.min_y()),
+            euclid::Point2D::new(value.max_x(), value.max_y()),
+        )
+    }
+}
+
+impl From<euclid::Transform2D<f64, UnknownUnit, UnknownUnit>> for crate::Affine {
+    fn from(t: euclid::Transform2D<f64, UnknownUnit, UnknownUnit>) -> Self {
+        Self::new(t.to_array())
+    }
+}
+
+impl From<crate::Affine> for euclid::Transform2D<f64, UnknownUnit, UnknownUnit> {
+    fn from(a: crate::Affine) -> Self {
+        Self::from_array(a.as_coeffs())
+    }
+}

kurbo/src/interop_euclid.rs

@@ -142,6 +142,9 @@ mod translate_scale;
 mod triangle;
 mod vec2;
 
+#[cfg(feature = "euclid")]
+mod interop_euclid;
+
 pub use crate::affine::Affine;
 pub use crate::arc::{Arc, ArcAppendIter};
 pub use crate::bezpath::{